Backflow Prevention Information

The Backflow and Cross-Connection Control Program oversees the installation and testing of backflow devices on water service lines to isolate the potable water system from contaminates that could backflow into the potable water system.

Facilities Requiring Backflow Devices

The types of facilities that are required to have backflow devices are:

  • Chemical Plants
  • Hospitals
  • Irrigation Systems
  • Laboratories
  • Sewage Treatment Plants
  • Other facilities who (in the judgment of the Utilities Director or the Water Plant Superintendent) potentially could have a cross-connection between the public water system and a potentially hazardous substance.


Regulations governing the Backflow and Cross-Connection Control Program can be found online:


Backflow Prevention Devices are required to be inspected and tested by a person certified by the State of Ohio Department of Commerce once installed and every 12 months thereafter. The device must be dismantled, inspected internally, cleaned, and repaired whenever needed and at least every 30 months.


A permit is required prior to the installation and/or inspection of a backflow device. This is obtained at the Shelby County Health Department. All test results must be sent to the Shelby County Health Department.